Incinerator



Jan. 19, 1965 B. F. MGLOUTH 3,166,033

' INCINERATOR Filed April 25. 1961 2 Sheets-Sheet 1 B. F. MCLOUTH Jan. 19, 1965 INCINERATOR 2 Sheets-Sheet 2 Filed April 25, 1961 nitecl States 'Iiatent tlice This invention relates to incinerators for burning refuse and the like and more particularly relates to the apparatus for charging the incinerator.

It is not uncommon to construct a refuse-burning incinerator on one side of a building'wall and have the ycharging doors disposed on the otherside of the wall with a feed passage going through the wall. In this type of incinerator arrangement, the feed passage will generally have a heat-resisting iire door in the feed passage adjacent the wall. It has been experienced that the heavy metal plates defining the walls of the feed passage in the area between the building wall and incinerator iire pot are exposedV to substantial heat because of their close proxirnity to the'iire in the incinerator, and that these heavy fmetal plates will, as a result of the intense heat, buckle and warp so that they will occasionallyneed replacing. With these comments' in mind, it is to the elimination of these and other problems that the present invention is directed, along with the inclusion therein of other novel and desirable features.

An object of the invention is to provide a new and improved incinerator charging apparatus of simple and inexpensive construction and operation and which will withstand the high temperatures to which the apparatus is exposedV without being damaged by the heat.

Another object of the invention is to provide a novel feed passage construction directing combustion air into the tire pot of the incinerator in such a manner that all portions of the feed passage are cooled to the extent of preventing damage to the feed passage from the intense heat from the fire in the incinerator.

Still another object of my invention is to provide a new and novel feed passage construction through which combustion air is supplied in such a manner as to cool the feed passage walls and to preheat the combustion air as it moves toward the iirepot of the incinerator so as to cause improved combustion of the burning materials in the incinerator.

A further object of the invention is to provide an improved and novel incinerator charging feed passage construction including a fire door of extremely rugged construction which will withstand the abuse of constant usage in openingand closing and will retain its capabilities of withstanding the intense heat from the iire pot without the use 'of tire clay or brick. Y

side of a building wall 12. The incinerator 10 has a fire pot 13 with a conventional ash door 14, and a stack 15 of substantially conventional design is provided for the incinerator and may be secured by suitable bracing to the building wall 12. It shouldbe understood that the incinerator 16 may be of the free-standingtype suitably braced within itselfk tofeliminate the need for the building wall.

An elongate and open-ended enclosure,l indicated in general by numeral 16 is provided lfor charging ,the incinerator through lthe wall 12. The enclosure 16 may vif desired be'suitably braced and supported frornlthe intween the wall 12 yand the incinerator ire pot." It will ,Y

be noted that the incinerator lire pot has a feed opening 29 in the side thereof aligned with the opening 21 in the wall 12 to accommodate vthe feed passage-defining enclosure 16. The enclosure section 17 has Va vertically sliding access doo'r l22 therein and extending through a slot 23 in the bottom .wall to permit opening and closing of the door 22. The door is suitably guided in channels at the opposite sides of the section 17 and is suspended by rods 24 at the sides of the section 17 and from a cable 25 which is trained over pulleysl26 which suitable device toy facilitate sliding of the doorr22 `down- Y wardly when itis desired to open the door.

. The section 1S is aixed as 4by welding to a pair of Y. upright guide channels 28 which are aflixed to the wall fand out of obstructing relation with the feed passage 31.

These and other objects and advantages of the inven- Y tion will more fully appear from the following description made in connection with the accompanying drawings wherein like reference characters refer to the same or similar parts throughout the several vviews and in which:

FIG. l is a perspective View of the incinerator in an outdoor location and adjacent a building wall through which the incinerator is charged;

FIG. 2 isa detail section view taken on a vertical plane as indicated approximately at 2 2 in FIG. l;

v FiG, 3 is'a detail section View taken approximately at 3 3 in FIG. 2; and

FIG. 4 isa detail section View taken approximately at 4 4 in FIG. 2.

One form of the invention is shown in the drawings and is described herein. As seen in FIG. l, the incinerator which is indicated in general by numeral 1t? is mounted on a suitable base 11 such as a slab of concrete or the like and is disposed in spaced relation with the outery The hollow fire door 30 is also suspended from the cable 25 and is slidable in a slot 32 in the top of enclosure 16 which is defined between the ends of section 1Sand throat 19. It will be noted vthat the bottom wallV 13a of section 18 underlies the'bottom edge portion of door 3) and overlies the bottom wall 33a of the feed throat section 19.

` substantially rectangular airopenings 38 disposed closely adjacent the top wall 33d of the feed throat. The sidewalls 3317 and 33e are also provided with conduit-dehning exterior panels 39 at their outer sides Vso as to define airflow passages 40 along the exterior surfaces'of the sidewall panels 33h and 33C. The passages 4h are open at their lower ends so as to permit air to ilow upwardly and then inwardly alongand across the top'wall 33d.

It should be noted that combustion air is provided only through the feed throat 19 over the grates of the incinerator fire pot and that there is no other source `of combustion air.

In operation, when a lire is burning in the incinerator `tire pot, the radiant heat from the fire will tend to heat up the fire bricks lining the iire pot and the feed throat 19 and tire door 30. However, the entire feed throat andV iire door are cooled by the combustion air owinginwardly through the hollow fire door 3) and hollow sidewalls of the feed throat.

patented Jan. 19, 1965 l The airwill tiow inthe direction of v arrows a downwardly through the door 30 and'will cool I the front panel 35 of the door and thence the air will flow outwardly through the opening 37 and across the bottom wall 33a of the feed throat so as to cool the bottom wall. Combustion air also iiows upwardlyin the direction of arrows b through the air conduits 40 'and the feed throat sidewalls and inwardly through the openingsV 38 and acrossthe top wall 33d of the feed throat. By this cooling, effected by the inflow of combustion air, the entire feed throat and lire door assembly is cooled sufficiently to 'prevent any damage `or warping or buckling to these portions of the structure which are continuously exposed to the radiant heat of the re in the re pot. Furthermore, it will be-noted that when additional refuse or fuel is to be placed in the incinerator, the access doorg22 is opened by pushing down .on the lever 27. whereupon the re door 30 movesupwardly into open position. Because of the constant cooling of the lire door`30the1e-will beV no scorching of the wall as the fire door is'moved upwardly into closely spaced confronting'relation therewith. Likewise, when the door 30 is in its closed position, the building wall 12 and the enclosure sections 17 and 18 and the access door 22 are all protected from the intense heat of the fire.

It should be pointed out that thercornbustion and cooling air cools the exterior surfaces of the enclosure 16 sufciently Vto minimize the possibility of a person being burned and so that the temperature of the exterior of the feed passage 16 is continuously unobjectionable.V This is particularly important when the feed passage 16 is fully supported on an incinerator of the free-standing type wherein the building wall is not used. In these conditions the length of the feed passage may be somewhat decreased.

It should also be noted that the re door 30 may take various forms. For instance. the hre door mayin certain instances be divided into upper and lower sections, the uppermost of which will move upwardly and the lowermost of which -will move downwardly to open the feed passage 31. In this situation one of the upper or lower sections of the fire door will move in a similar direction .to the access door 22. It will be understood that such the other walls 33b, 33C and 33d. In certain instances. it is therefore permissible to position the air outlet opening in the fire doorat a location intermediate the upper and lower ends of the re door; this location of the air outlet opening may be desirable when a two-part fire door havingV upwardly and downwardly movable upper and lower sections is used and wherein the upper and lower sections of the fire door both take in combustion air from the exterior of the feed passage at their upper and lower edges respec-V tively; the combustion air being supplied throughsuch an or wall 33a will be subjected to substantially less heat than an air outlet opening disposed intermediate the'upper and lower walls of the feed passage will cause sufficient cooling of the re door and will also cause sufficient turbulence'of the combustion airbeing supplied in the feed Vpassage as to cause the combustion airto sweep across and adequately cool the lowermost wall ofthe feed passage.

It will beseen that I have provided a novel apparatus through which the incinerator is charged and which is constructed simply but in such a manner that'the entire feed throat and fire door are cooledby inwardly flowing,

may be made' in the form, detail,` arrangement and proportion of the parts without departing from the scope of the invention which consists of the matter described herein and set forth in they appended claims..Y

What is claimed is:

1. An incinerator, comprising means defining a fire pot with a feed opening in the side thereof, an elongate feed throat having an inner end communicating with said feed opening and an outer end, a fire door obstructing thefeed throat at said outer end, means mounting said Y doorfor movement out of obstructing relation with the feed throat, said feed throat having first and second walls disposed opposite each other and also having third and fourth walls disposed opposite each other and rigidly aixed to said first and second walls, each of said walls having interior' and exterior sides, each of said rst and second walls Vhaving an elongate air opening therethrough adjacent said third wall and extending along said third wall, enclosure means atixed to the exterior sides of each of said first and second walls and cooperating therewith to define air conduits with air inlets adjacent said fourth wall and directing combustion and cooling air along the exterior sides of said first and second walls for cooling the same and also directing rthe air through said air openings and across the interior side of said third wall, said door being hollow and having a metal plate facing the outer end of thefeed throat, the door having one `edge portion disposed at the` exterior of lthe feed throat and having an air intake ,opening in said one edge portion, and said metal plate of the door having an elongate outlet opening adjacent the fourth wall of the feed throat and extending along said fourth wall to permit air to be drawn inwardly Vthrough said air intake opening and to liow through the door for coolingsaid plate and across the interiorlrside of the fourth wall, whereby the combustion air cools the feed throat and door to prevent warping thereof.

2.V An incinerator, comprising means defining a fire pot with a feed opening in the side thereof, an elongate box-like feed throat having Van inner end communicating with said feed opening and Ian outer end, an air cooled fire door obstructing the outer end of the feed throat and having an inner panelfacing inwardly of -the feed `throat, said door having a hollow interior through which `walls and through the apertures and across the third wall of the feed throat, said door having an air intake opening at the exterior of the feed throat and an air delivery opening facing inwardly of the feed throat adjacent the fourth wall and directing air across the fourth wall.

3. Anfincinerator, comprising means defining a fire pot with a feed opening in the side thereof, a feed throat having an inner end communicating with said feed opening and having an outer end, thefeed throat having top andV bottom walls and also having a pair of upright hollow air-cooled sidewalls affixed to said top and bottom walls, the hollow sidewalls having open lower edge portions to receive combustion and cooling air and having closed upper end portions,.said sidewalls having inner panels with air outlets adjacent the top wall to direct the combustion and cooling air inwardly across the top wall, an upright air-cooled hollow door at the outer end of the feed throat, lmeans mounting the door for movement out of Vand into obstructing relation with the feed throat,A

Y the door having an upper portion at the exterior ofthe yto direct combustion and cooling air inwardly across the bottom wall, whereby the combustion air supplied through the sidewalls and iire door provides continuous cooling for the entire feed throat to prevent d-amage thereto due to heat from the fire pot.

4. In combination, a building wall having an enlarged opening therein and having inner and outer sides, an incinerator spaced from the outer side of the building wall and including a lire pot with a feed opening in the side thereof and aligned with the opening in the building wall, enclosure means defining a feed passage extending through the opening in the building wall and having an inner end communicating with the feed opening of the ire pot and also having an outer end at the inner side of the building wall, an access door in the feed passage at the outer end thereof, means mounting saidaccess door for movement into and out of obstructing relation with the feed passage, -a lire door in the feed passage and disposed between the outer side of the wall and the fire pot, means mounting the ire door for movment out of and into obstructing relation with the feed passage, the re door being hollow to permit air flow therethrough, the door having an inner panel generally facing the fire pot, the iiredoor having opposite edge portions, one of said edge portions being open to receive air therein, said panel having an outlet opening adjacent the other edge portion of the door, the passage-defining enclosure means having an opening therein receivingV said open edge portion of the door therethrough to permit atmospheric air to enter the door and flow therethrough and into the feed passage whereby to cool the re door and prevent exposing of the wall to heated combustion.

5. In combination, a building wall having an enlarged opening therein and having inner and outer sides, an incinerator spaced from the outer side of the wall and including a fire pot with a feed opening therein, and aligned with the opening in the building wall, enclosure means delining a feed passage extending through the opening in the building wall and having an inner end communicating with the feed opening in the re pot and also having an outer end at the inner sideof the building wall, an access door in the feed passage at the outer end thereof, means mounting said access door for movement into and out of obstructing vrelation with the feed passage, a fire door in the feed passage and disposed between the outer side of the wall and the fire pot, lthe passage-defining enclosure means having an opening adjacent the top of the fire door and receiving the top of the fire door therethrough, means slidably mounting the re door for vertical slidingmovement out of and into obstructing relationV with the feed passage and into confronting relation with the wall above the feed passage, the fire door being hollow to permit air ow therethrough, the door having an inner panel facing the lire pot land having opposite upper and lower edge portions, the upper edge portion of the door being open to receive air therein and said panel having an outlet opening therein adjacent the lower edge of the door to direct combustion air downwardly through the door and into the feed passage to the iire pot whereby to cool the door to protect said wall when the door isV shifted into and out of feedpassage-obstructing positions.

6. A feed throat for attachment to an incinerator sidewall at the feed opening therein, said feed throat having a substantially rectangular shape and including a pair of upright air-cooled sidewalls disposed opposite each other, each of said sidewalls having-thickness and an open interior extending transversely of the thickness of the sidewall, said feed throat also including horizontal top and bottom Walls opposite each other and aiiixed to said air-cooled sidewalls to cooperate therewith in a defining a feed throat enclosure, the enclosure having an inner end to be disposed adjacent the incinerator sidewall and an outer end, an upright air-cooled re door in obstructing relation with the outer end of the enclosure, means on said enclosure and mounting said door Y for movement out of obstructing relation with the outer end of the enclosure, said door having thickness and having an open interior extending transversely of the thickness of the door, said open interior of the door being unobstructed ina vertical direction to permit passage of air vertically therethrough for cooling the door, said aircooled sidewalls and said lire door having air outlets communicating withk said open interiors and with the enclosure, each of said outlets being disposed adjacent a respective one of said horizontal walls to Vdirect air thereacross for cooling, said air-cooled sidewalls and fire door also having air inlets respectively disposed remotely in a vertical direction from said outlets-and said air inlets of the air-cooled sidewalls and fire door respectively communicating between the open interior of said sidewalls and said door and the exterior of the enclosure whereby to Vsupply combustion and cooling air to move verticallythrough said air-cooled sidewalls and re door and horizontally across said top and bottom Walls for cooling the entire feed throat and iire door.

7. A'feed throat for attachment to an incinerator sidewall at the feed opening therein, saidv feed throat having a substantially rectangular shape and including a pair of air-cooled upright sidewalls disposed opposite each other and having upright passages permitting cooling air to move upwardly therethrough, said feed throat. also including top and bottom walls opposite each other` and atiixed to said air-cooled upright sidewalls to cooperate therewith in. defining a vfeed throat enclosure the enclosure having an inner end to be disposed adjacent the lirepot and having an outer end, an upright air-cooledfire doorin obstructing relation with the outer end of the enclosure, means mounting said door on thev enclosure for movement out of obstructing relation with the outer end of the enclosure, said door having an up- Y right air passage therein with an air inlet and an air outlet widely spaced from each other in a vertical directionV thereby permitting downward movement of the air through the passage in the door for cooling the door,

wall and opening tothe exterior of the enclosure, and Y said air outlet of the passage in the door opening inwardly of the enclosure and being disposed adjacent the bottom wall to direct air across the bottom wall and effect cooling thereof, the air inlet of the passage in the door opening to the exterior of the enclosure adjacent' the top wall, whereby to cause combustiony and cooling air to move upwardly through the air-cooled sidewalls and downwardly through the fire door and inwardly across v the top and bottom walls for cooling the entire feed throat and fire door.

References Cited in the file of this patent UNITED STATES PATENTS 

6. A FEED THROAT FOR ATTACHMENT TO AN INCINERATOR SIDEWALL AT THE FEED OPENING THEREIN, SAID FEED THROAT HAVING A SUBSTANTIALLY RECTANGULAR SHAPE AND INCLUDING A PAIR OF UPRIGHT AIR-COOLED SIDEWALLS DISPOSED OPPOSITE EACH OTHER, EACH OF SAID SIDEWALLS HAVING THICKNESS AND AN OPEN INTERIOR EXTENDING TRANSVERSELY OF THE THICKNESS OF THE SIDEWALL, SAID FEED THROAT ALSO INCLUDING HORIZONTAL TOP AND BOTTOM WALLS OPPOSITE EACH OTHER AND AFFIXED TO SAID AIR-COOLED SIDEWALLS TO COOPERATE THEREWITH A DEFINING A FEED THROAT ENCLOSURE, THE ENCLOSURE HAVING AN INNER END TO BE DISPOSED ADJACENT THE INCINERATOR SIDEWALL AND AN OUTER END, AN UPRIGHT AIR-COOLED FIRE DOOR IN OBSTUCTING RELATION WITH THE OUTER END OF THE ENCLOSURE, MEANS ON SAID ENCLOSURE AND MOUNTING SAID DOOR FOR MOVEMENT OUT OF OBSTRUCTING RELATION WITH THE OUTER END OF THE ENCLOSURE, SAID DOOR HAVING THICKNESS AND HAVING AN OPEN INTERIOR EXTENDING TRANSVERSELY OF THE THICKNESS OF THE DOOR, SAID OPEN INTERIOR OF THE DOOR BEING UNOBSTRUCTED IN A VERTICAL DIRECTION TO PERMIT PASSAGE OF AIR VERTICALLY THERETHROUGH FOR COOLING THE DOOR, SAID AIRCOOLED SIDEWALLS AND SAID FIRE DOOR HAVING AIR OUTLETS COMMUNICATING WITH SAID OPEN INTERIORS AND WITH THE ENCLOSURE, EACH OF SAID OUTLETS BEING DISPOSED ADJACENT A RESPECTIVE ONE OF SAID HORIZONTAL WALLS TO DIRECT AIR THEREACROSS FOR COOLING, SAID AIR-COOLED SIDEWALLS AND FIRE DOOR ALSO HAVING AIR INLETS RESPECTIVELY DISPOSED REMOTELY IN A VERTICAL DIRECTION FROM SAID OUTLETS AND SAID AIR INLETS OF THE AIR-COOLED SIDEWALLS AND FIRE DOOR RESPECTIVELY COMMUICATING BETWEEN THE OPEN INTERIOR OF SAID SIDEWALLS AND SAID DOOR AND THE EXTERIOR OF THE ENCLOSURE WHEREBY TO SUPPLY COMBUSTION AND COOLING AIR TO MOVE VERTICALLY THROUGH SAID AIR-COOLED SIDEWALLS AND FIRE DOOR AND HORIZONTALLY ACROSS SAID TOP AND BOTTOM WALLS FOR COOLING THE ENTIRE FEED THROAT AND FIRE DOOR. 